Home / 15,668.40-21,618.08-10,082.64

Finding the Fourth Proportional to 15,668.40, 21,618.08 and 10,082.64

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Solution

The fourth proportional to 15,668.40, 21,618.08 and 10,082.64 is: 13,911.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,668.40 : 21,618.08 = 10,082.64 : x
  2. Step 2: Convert to fraction form
    15,668.40/21,618.08 = 10,082.64/x
  3. Step 3: Cross multiply
    15,668.40x = 21,618.08 × 10,082.64
  4. Step 4: Simplify right side
    15,668.40x = 217,967,318.13
  5. Step 5: Solve for x
    x = 217,967,318.13/15,668.40
  6. Step 6: Final answer
    x = 13,911.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.